Stop-cock



f zsheets-sheen 1. J. HOWES.

(No Model.)

STOP 000K.

No. 280,829. Patented July 10, 1883.

INVENTR WITNEEEEE (No Model.) 2 Sheets-Sheet 2.

\ J. HOWES.

y STOP 000K. No. 280,829. y A Patented July 10, 1883.

W ITNE 5 5E 5 INVENTDQ www UNITED STATES PATENT OFFICE.

JOHN HOwEs, OE WOEOESTEE, MASSACHUSETTS.

STOP-COC K.

SPECIFICATION forming part of' Letters Patent No. 280,829,1dated July 10, 1883.

i Application led June 17, 1882. (No model.)

To all whom, it may concern.-

Be it known that I, JOHN HowEs, of Worcester, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Stop-Cocks; and I declareV the following to be a description of my said invention, sufficiently full, clear, and exact to enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of' this specification.

The obj ect of my present invention is to provide a practical, durable, and convenient stop or plug cock for water-service pipes and for similar purposes, which shall obviate the-ordinary obj ections of leakage at the top and bottom ends of the plug, after slight use, and stiffness of action when turned. Theselobjects I attain by the mechanism herein shown and described.

Figure l is a side view of my improved stopcock. Fig. 2 is a longitudinal vertical section of the. same. Fig. 3 is a transverse vertical section at line .fr x. Fig. 4 is a horizontal section at line fy y; and Fig. 5 isv a horizontal seetion at line z z, or a plan of the spindle-disk- Fig. 6 is a longitudinal vertical section, showing the passages to the upper and lower chambers formed along the valveseat. Fig. 7 is a horizontal section at line w w, Fig. 6.

In referring to the drawings, A denotes the body or shell ofthe cock, provided with attaching-bosses p p at its ends, and having a central valve seat or cylinderproperly bored out internally for the receptionof the conical plug B, which is made somewhat shorter than the and the endsof the cylinder.

seat-cylinder, and is located so as to leave chambers e and f between' the ends of the plug A screw-cap, C, fits onto and closes the top openingV of the shell. rIhe operating-spindle D, which passes through-the center ofthe cap- C, is provided with a flange or disk, D', which rests against a packing-disk, E, on the under side of the cap and forms a close joint therewith. rlhe spindle or stem D is formed separate from the plug B, its lower end being fitted to engage with the plug for rotating it withoutbeing attached thereto, so that the parts are permitted longitudinal movement independent of' each other, while they are connected as regards rotative movement. rIhis connection is made,

or waste-passage, F, is formed at one side through a suitable boss or projection, F, and a screw-plug, G, is arranged for closing and opening said waste-passage, as illustrated. A 'portion of theperiphery of the disk D may be cut away, and a pin, II, fitted in the edge of the shell, to serve as a stop when opening and closing the cock. A small channel, I, is formed from the lower chamber, e, to the passage a on the delivery side, to allow water to escape from beneath the plug B. Water can also pass up into the chamber f through thehead of the valve, or through a passage formed in the shell or seat alongside the valve, as indicated at J, Figs. 6 and 7, so that the pressure will force the disk D firmly against the packing E and make a close joint therewith, while the valve B, being independent of thespindle, remains in proper` position on its seat. The pressure of the water, when the passage is closed, acting upon the plug, forces it into its seat with more or less pressure, according to the height of the column of water from which the pressure is derived; but, when the valve is open and the pressure of water is equally distributed, the valve or plug is substantially balanced, and there is no tendency for the water to press out between the plug and its seat to cut a rut along the adjacent surfaces, causing leakage and permitting the escape of water, as is the case with the ordinary plug-cocks.

The bottom end of the `cylinder at AZ can be cast integral or without an opening, or, if preferred, and to facilitate manufacture, it can be formed with an open end, and be afterward tightly closed by a screw-plug when the parts have been fitted and the inner surfaces properly finished.

W'hat I claim as of my invention, and desire to secure by Letters Patent, is-

l. A stop-cock, constructed substantially as hereinbefore described, consisting ofthe body- IOO cylinder A, closed at its bottoni A2, and having connecting-bosses p, with passages a, the conical plug-valve B, arranged Within said cylinder, with its ports communicating with said passages a, the independent handle-spindle D, interlocking with said plug, and provided with a broad ange or disk, D, within the cylinderehaniberf, the cap-piece C, and the packingdisk E, severally constructed and arranged as shown, and for the purposes set forth,

2. In combination with the shell A, plugvalve B, and handlespindle D, arranged as described, the side vent, F, and the stopper or Valve G, as and for the purpose set forth.

3. Inastop-cock, abody-eylinder and aplugvalve, constructed and arranged as described, with a Water-chamber, f, above the plug, eoniinnnicating with the supply-passage by a channel, J, along the seat, or through the valvehead, and a chamber, e, beneath the plug, provided with a channel, I, leadi ng from said chamber into the delivery-passage, as and for the purposes set forth. s

W'itness luy hand this 12th day oi' June, A. D. 1882.

JOHN Howns.

Witnesses:

(1i-Lis. H. BURLEIGH, AUSTIN W. hLiTHnws. 

